Wireless power transmitting device for wireless power communication system

• US 9,264,107 B2
• Filed: 07/16/2012
• Issued: 02/16/2016
• Est. Priority Date: 07/14/2011
• Status: Active Grant

• Current Assignee: GE Hybrid Technologies, LLC
• Original Assignee: Hanrim Postech Co., Ltd.
• Inventors: Jung, Chun-Kil, Kuk, Yoon-Sang
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): Dhillon, Jagdeep
• Application Number:
  US13/550,147
• Publication Number:
  US 20130015718A1
• Time in Patent Office: 1,310 Days
• Field of Search: 307/104, 307/10.1, 307/106, 307/14, 307/9, 307/66, 307/64, 307/43, 307/39, 307/80, 307/82, 257/347, 257/382, 257/66, 438/151, 438/166, 438/149, 343/895, 343/700.MS, 343/702
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power transmitting device for a wireless power communication system. The wireless power transmitting device includes: a circuit board including an insulating layer and a ground formed on the insulating layer; a core of a magnetic substance disposed on the circuit board to have a concave portion; a wire-wound coil accommodated in the concave portion to have one end for receiving a power through the circuit board and the other end connected to the ground; and a metal layer disposed between the core and the insulating layer to be connected to the ground.

Claims

1. A wireless power transmitting device for a wireless power communication system, comprising:

a circuit board including an insulating layer and a ground formed on the insulating layer;

a core of a magnetic substance disposed on the circuit board to have a concave portion;

a wire-wound coil accommodated in the concave portion to have one end for receiving a power through the circuit board and the other end connected to the ground; and

a metal layer disposed between the core and the insulating layer to be connected to the ground,

wherein the coil includes a first coil and a second coil, which is partially overlapped with the first coil, and

wherein the circuit board controls that power is supplied to any one of the first coil and the second coil to generate a wireless power signal.

2. The wireless power transmitting device of claim 1, wherein the metal layer has an area corresponding to the core.

3. The wireless power transmitting device of claim 2, wherein the metal layer is attached on the insulating layer of the circuit board.

4. The wireless power transmitting device of claim 3, wherein the metal layer includes copper.

5. The wireless power transmitting device of claim 2, wherein the metal layer is a metal sheet disposed between the core and the circuit board.

6. The wireless power transmitting device of claim 5, wherein the metal sheet includes aluminum.

7. The wireless power transmitting device of claim 1, further comprising:

a magnetic sheet disposed between the core and the metal layer.

8. The wireless power transmitting device of claim 7, wherein the metal layer includes a first metal layer attached on the insulating layer of the circuit board and a second metal layer disposed between the core and the first metal layer.

9. The wireless power transmitting device of claim 8, wherein the first metal layer includes copper and the second metal layer includes aluminum.

10. The wireless power transmitting device of claim 7, wherein the magnetic sheet includes nickel-zinc alloy.

11. The wireless power transmitting device of claim 10, wherein the core of the magnetic substance includes manganese-zinc alloy.

12. The wireless power transmitting device of claim 10, wherein the magnetic sheet comprises:

a first film and a second film; and

a sintering layer disposed between the first film and the second film to be formed by sintering of the nickel-zinc alloy component.

13. The wireless power transmitting device of claim 12, wherein the sintering layer is configured to be divided into a plurality of regions by grooves arranged in one or more directions.

14. The wireless power transmitting device of claim 1, wherein a plurality of extension grooves are formed on a side wall defining the concave portion of the core, and

wherein both ends of the coil extends out of the core via the plurality of the extension grooves to be connected to the circuit board.